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Create unique constraint with null columns
... bigger. Depending on data distribution and requirements, it may be a good idea or not. It's even possible that all three variants serve their purpose.
– Erwin Brandstetter
Nov 6 '14 at 14:58
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How to avoid isset() and empty()
...that your variables always have a known default value, gives the reader an idea of what the following code will work on and thereby also serves as a sort of self-documentation.
Arrays:
$defaults = array('foo' => false, 'bar' => true, 'baz' => 'default value');
$values = array_merge($defau...
iOS 7 TableView like in Settings App on iPad
...n awesome answer. I still cannot get the top and bottom lines to hide. Any idea? Everything else works perfectly!
– hishamaus
Nov 13 '13 at 3:18
5
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I want to execute shell commands from Maven's pom.xml
...instead of giving the full path in <executable> also might be a good idea
– akn
Sep 18 '17 at 19:57
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Can I control the location of .NET user settings to avoid losing settings on application upgrade?
... no automatic upgrade -
you have to call Upgrade yourself.
Here is one idea for determining when
to call Upgrade:
Have a boolean setting called
CallUpgrade and give it a default
value of true. When your app starts
up, you can do something like:
if (Properties.Settings.Value.CallUp...
Why use JUnit for testing?
...vices, checking the audit trail of a financial transaction... you get the idea. "Output" doesn't mean a few lines of text, "output" means aggregate system behavior.
Lastly, unit and behavior tests define system behavior. Tests can be run by a continuous integration server and checked for correct...
Conveniently Declaring Compile-Time Strings in C++
...emplate parameter. Each different string gives a different type. The basic idea is to turn the string into a character pack template<char... cs>. In theory, you could build something that takes a literal string and compiles the contents to a function. See the answer by dyp. A very complete-loo...
“Thinking in AngularJS” if I have a jQuery background? [closed]
....
2. Don't augment jQuery with AngularJS
Similarly, don't start with the idea that jQuery does X, Y, and Z, so I'll just add AngularJS on top of that for models and controllers. This is really tempting when you're just starting out, which is why I always recommend that new AngularJS developers don...
How do I obtain a Query Execution Plan in SQL Server?
...adly), then you can capture a plan using a SQL Server Profiler trace. The idea is to run your query while a trace that is capturing one of the "Showplan" events is running.
Note that depending on load you can use this method on a production environment, however you should obviously use caution. T...
What algorithm gives suggestions in a spell checker?
...estions (when building the dictionary) by using "bad" hash functions.
The idea is to look at the types of spelling errors people make, and to design hash functions that would assign an incorrect spelling to the same bucket as its correct spelling.
For example, a common mistake is to use the wrong ...